INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-59-
3.7.13
TO PROGRAM VOLTAGE RANGE (RNG)
The RNG header is used to select a range. The numeric value following the RNG header will also define the upper limit
for the AMP value. The RNG value will select the higher range if the value is greater than the lower range value
defined by the ALM screen which is 135 for the standard voltage range. If the range and voltage amplitude are to be
programmed by the same data string the RNG header and argument must precede the AMP header or a syntax error
will be generated.
The following example will select the 270 range from the 135/270 range pair with an upper amplitude limit of 210 volts.
RNG210
3.7.14
TO PROGRAM EXTERNAL SYNCHRONIZATION (SNC)
The SNC header is used with the EXT argument to synchronize the phase A output to an external sync input. The
phase A output will be phase referenced to the sync input with the displacement equal to the PHZ A value.
The following ASCII string will program the phase A output to 0 degree relative to the external sync input and select the
external sync mode.
PHZA0 SNC EXT
Sending the ASCII string SNC INT will disable the sync input.
3.7.15
TO PROGRAM EXTERNAL CLOCK (CLK) (optional)
The CLK header has an argument of either EXT or INT. The CLK header with the EXT argument will make one AC
Power System a slave to another system. The slave will operate at the same frequency as the master. Phase A of the
slave will be related to phase A of the master by the PHZ A value of the slave.
NOTE
The clock option is only available if the associated power systems have the LK option.
The following ASCII string will enable the CLOCK and LOCK inputs to the associated slave AC Power System:
CLK
EXT
NOTE
If there is no signal at the CLOCK input at the rear panel of the associated
power system, the output will go to zero volts.
The ASCII string CLK INT will return the slave AC Power System to its programmed frequency.
3.7.16 TO
TRIGGER
AN OPERATION (TRG)
The TRG header has no argument. When the TRG mnemonic is included in a setup string, it will delay execution of the
string until the GPIB Device Trigger message is sent by the bus controller. The TRG header may also be used to
trigger register operations by including the TRG header with the string used to recall a register. The following example
will delay execution of the program in register 1 until an IEEE-488 Device Trigger is received:
REC1
TRG
Содержание 12000L-1P
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Страница 133: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 129 Figure 1 STEADY STATE VOLTAGE...
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Страница 136: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 132 Figure 10 11 ABNORMAL OPERATION...
Страница 137: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 133 Figure 12 13 ABNORMAL FREQUENCY...
Страница 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
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